var classInfo = {
	title:'ickt24',
	nums: 10,
	student: [
		{
			name:'王娇',
			age: 18
		},{
			name: '胡俊逸',
			age: 18
		},
		{
			name:'王锴丰',
			age: 28
		}
	]
}

var newClassInfo2 = {...classInfo};
//console.log(JSON.stringify(newClassInfo2));
console.log(classInfo.student === newClassInfo2.student);
newClassInfo2.student[0]['age'] = 35;
console.log(classInfo.student[0]['age']);